The Bosch Starter Set 2x ProCORE 18 V 4.0 Ah Professional Li-Ion battery pack offers a powerful and efficient solution for anyone who needs a reliable power source for their cordless tools. With two ProCORE 18 V 4.0 Ah batteries and a GAL 18V-160 Professional charger, this set is ideal for professional applications. ProCORE technology provides exceptional performance comparable to corded tools and enables use that delivers 87% more power than conventional 18 V batteries. The innovative cell technology ensures reduced weight and compact dimensions, while COOLPACK technology extends battery life by 135% and prevents overheating. The charger offers an impressive charging speed and various charging modes to meet the needs of the user. ProCORE technology for up to 87% more power compared to standard batteries. Compact design and lower weight thanks to the latest cell technology. Coolpack technology extends the service life of the battery by 135 %. Fast charging: Fully charged in just 44 minutes. Three charging modes (Standard, PowerBoost, Long Life) for flexible use.